ICE: 'assertion failed: (left == right), compiler/rustc_typeck/src/check/method/mod.rs:357:9

[chengniansun]

Code

#[lang = "shl_assign"]
trait ShlAssign {
    fn shl_assign(impl Clone);
}
macro_rules! shl_assign_impl {
    ( $ t : ty , $ f : ty ) => {
        impl t {
            fn shl_assign() {
                self <<= other
            }
        }
    };
}
macro_rules ! shl_assign_impl_all {
( $ ( $ t : ty ) * ) => ( $ (
shl_assign_impl !
                  { $ t , u16 }
)   )
}
shl_assign_impl_all! { u8                                                  }

Meta

rustc --version --verbose:

rustc 1.54.0-nightly (716394d65 2021-05-03)
binary: rustc
commit-hash: 716394d6581b60c75cfdd88b8e5b876f2db88b62
commit-date: 2021-05-03
host: x86_64-unknown-linux-gnu
release: 1.54.0-nightly
LLVM version: 12.0.0

Error output

error: expected one of: `*`, `+`, or `?`
  --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:15:29
   |
15 |   ( $ ( $ t : ty ) * ) => ( $ (
   |  _____________________________^
16 | | shl_assign_impl !
17 | |                   { $ t , u16 }
18 | | )   )
   | |_^

error[E0412]: cannot find type `t` in this scope
  --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:7:14
   |
7  |         impl t {
   |              ^ not found in this scope
...
20 | shl_assign_impl_all! { u8                                                  }
   | ---------------------------------------------------------------------------- in this macro invocation
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0424]: expected value, found module `self`
  --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:9:17
   |
8  |             fn shl_assign() {
   |                ---------- this function doesn't have a `self` parameter
9  |                 self <<= other
   |                 ^^^^ `self` value is a keyword only available in methods with a `self` parameter
...
20 | shl_assign_impl_all! { u8                                                  }
   | ---------------------------------------------------------------------------- in this macro invocation
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
help: add a `self` receiver parameter to make the associated `fn` a method
   |
8  |             fn shl_assign(&self) {
   |                           ^^^^^

error[E0425]: cannot find value `other` in this scope
  --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:9:26
   |
9  |                 self <<= other
   |                          ^^^^^ not found in this scope
...
20 | shl_assign_impl_all! { u8                                                  }
   | ---------------------------------------------------------------------------- in this macro invocation
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0658]: language items are subject to change
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:1:1
  |
1 | #[lang = "shl_assign"]
  | ^^^^^^^^^^^^^^^^^^^^^^
  |
  = help: add `#![feature(lang_items)]` to the crate attributes to enable

warning: anonymous parameters are deprecated and will be removed in the next edition.
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:3:19
  |
3 |     fn shl_assign(impl Clone);
  |                   ^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: impl Clone`
  |
  = note: `#[warn(anonymous_parameters)]` on by default
  = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
  = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>

error[E0601]: `main` function not found in crate `perses_node_priority_with_dfs_delta_reduced_mutant`
  --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:1:1
   |
1  | / #[lang = "shl_assign"]
2  | | trait ShlAssign {
3  | |     fn shl_assign(impl Clone);
4  | | }
...  |
19 | | }
20 | | shl_assign_impl_all! { u8                                                  }
   | |____________________________________________________________________________^ consider adding a `main` function to `perses_node_priority_with_dfs_delta_reduced_mutant.rs`

error[E0152]: found duplicate lang item `shl_assign`
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:2:1
  |
2 | / trait ShlAssign {
3 | |     fn shl_assign(impl Clone);
4 | | }
  | |_^
  |
  = note: the lang item is first defined in crate `core` (which `std` depends on)
  = note: first definition in `core` loaded from /home/cnsun/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-c8ded1707ad10767.rlib
  = note: second definition in the local crate (`perses_node_priority_with_dfs_delta_reduced_mutant`)

thread 'rustc' panicked at 'assertion failed: `(left == right)`
  left: `1`,
 right: `0`', compiler/rustc_typeck/src/check/method/mod.rs:357:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.54.0-nightly (716394d65 2021-05-03) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [typeck] type-checking `<impl at perses_node_priority_with_dfs_delta_reduced_mutant.rs:7:9: 11:10>::shl_assign`
#1 [typeck_item_bodies] type-checking all item bodies
end of query stack
error: aborting due to 7 previous errors; 1 warning emitted

Some errors have detailed explanations: E0152, E0412, E0424, E0425, E0601, E0658.
For more information about an error, try `rustc --explain E0152`.

Backtrace

error: expected one of: `*`, `+`, or `?`
  --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:15:29
   |
15 |   ( $ ( $ t : ty ) * ) => ( $ (
   |  _____________________________^
16 | | shl_assign_impl !
17 | |                   { $ t , u16 }
18 | | )   )
   | |_^

error[E0412]: cannot find type `t` in this scope
  --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:7:14
   |
7  |         impl t {
   |              ^ not found in this scope
...
20 | shl_assign_impl_all! { u8                                                  }
   | ---------------------------------------------------------------------------- in this macro invocation
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0424]: expected value, found module `self`
  --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:9:17
   |
8  |             fn shl_assign() {
   |                ---------- this function doesn't have a `self` parameter
9  |                 self <<= other
   |                 ^^^^ `self` value is a keyword only available in methods with a `self` parameter
...
20 | shl_assign_impl_all! { u8                                                  }
   | ---------------------------------------------------------------------------- in this macro invocation
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
help: add a `self` receiver parameter to make the associated `fn` a method
   |
8  |             fn shl_assign(&self) {
   |                           ^^^^^

error[E0425]: cannot find value `other` in this scope
  --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:9:26
   |
9  |                 self <<= other
   |                          ^^^^^ not found in this scope
...
20 | shl_assign_impl_all! { u8                                                  }
   | ---------------------------------------------------------------------------- in this macro invocation
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0658]: language items are subject to change
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:1:1
  |
1 | #[lang = "shl_assign"]
  | ^^^^^^^^^^^^^^^^^^^^^^
  |
  = help: add `#![feature(lang_items)]` to the crate attributes to enable

warning: anonymous parameters are deprecated and will be removed in the next edition.
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:3:19
  |
3 |     fn shl_assign(impl Clone);
  |                   ^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: impl Clone`
  |
  = note: `#[warn(anonymous_parameters)]` on by default
  = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2018 edition!
  = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>

error[E0601]: `main` function not found in crate `perses_node_priority_with_dfs_delta_reduced_mutant`
  --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:1:1
   |
1  | / #[lang = "shl_assign"]
2  | | trait ShlAssign {
3  | |     fn shl_assign(impl Clone);
4  | | }
...  |
19 | | }
20 | | shl_assign_impl_all! { u8                                                  }
   | |____________________________________________________________________________^ consider adding a `main` function to `perses_node_priority_with_dfs_delta_reduced_mutant.rs`

error[E0152]: found duplicate lang item `shl_assign`
 --> perses_node_priority_with_dfs_delta_reduced_mutant.rs:2:1
  |
2 | / trait ShlAssign {
3 | |     fn shl_assign(impl Clone);
4 | | }
  | |_^
  |
  = note: the lang item is first defined in crate `core` (which `std` depends on)
  = note: first definition in `core` loaded from /home/cnsun/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-c8ded1707ad10767.rlib
  = note: second definition in the local crate (`perses_node_priority_with_dfs_delta_reduced_mutant`)

thread 'rustc' panicked at 'assertion failed: `(left == right)`
  left: `1`,
 right: `0`', compiler/rustc_typeck/src/check/method/mod.rs:357:9
stack backtrace:
   0: rust_begin_unwind
             at /rustc/716394d6581b60c75cfdd88b8e5b876f2db88b62/library/std/src/panicking.rs:493:5
   1: core::panicking::panic_fmt
             at /rustc/716394d6581b60c75cfdd88b8e5b876f2db88b62/library/core/src/panicking.rs:92:14
   2: core::panicking::assert_failed_inner
   3: core::panicking::assert_failed
   4: rustc_typeck::check::method::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::lookup_method_in_trait
   5: rustc_typeck::check::op::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::lookup_op_method
   6: rustc_typeck::check::op::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_overloaded_binop
   7: rustc_typeck::check::op::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_binop_assign
   8: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_with_expectation
   9: rustc_typeck::check::fn_ctxt::checks::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_block_with_expected
  10: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_expr_with_expectation
  11: rustc_typeck::check::expr::<impl rustc_typeck::check::fn_ctxt::FnCtxt>::check_return_expr
  12: rustc_typeck::check::check::check_fn
  13: rustc_typeck::check::inherited::InheritedBuilder::enter
  14: rustc_typeck::check::typeck
  15: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  16: rustc_data_structures::stack::ensure_sufficient_stack
  17: rustc_query_system::query::plumbing::force_query_with_job
  18: rustc_query_system::query::plumbing::get_query_impl
  19: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::typeck
  20: rustc_middle::ty::<impl rustc_middle::ty::context::TyCtxt>::par_body_owners
  21: rustc_typeck::check::typeck_item_bodies
  22: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  23: rustc_data_structures::stack::ensure_sufficient_stack
  24: rustc_query_system::query::plumbing::force_query_with_job
  25: rustc_query_system::query::plumbing::get_query_impl
  26: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::typeck_item_bodies
  27: rustc_session::utils::<impl rustc_session::session::Session>::time
  28: rustc_typeck::check_crate
  29: rustc_interface::passes::analysis
  30: rustc_query_system::dep_graph::graph::DepGraph<K>::with_task_impl
  31: rustc_data_structures::stack::ensure_sufficient_stack
  32: rustc_query_system::query::plumbing::force_query_with_job
  33: rustc_query_system::query::plumbing::get_query_impl
  34: <rustc_query_impl::Queries as rustc_middle::ty::query::QueryEngine>::analysis
  35: rustc_interface::passes::QueryContext::enter
  36: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::enter
  37: rustc_span::with_source_map
  38: rustc_interface::interface::create_compiler_and_run
  39: scoped_tls::ScopedKey<T>::set
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md

note: rustc 1.54.0-nightly (716394d65 2021-05-03) running on x86_64-unknown-linux-gnu

query stack during panic:
#0 [typeck] type-checking `<impl at perses_node_priority_with_dfs_delta_reduced_mutant.rs:7:9: 11:10>::shl_assign`
#1 [typeck_item_bodies] type-checking all item bodies
#2 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 7 previous errors; 1 warning emitted

Some errors have detailed explanations: E0152, E0412, E0424, E0425, E0601, E0658.
For more information about an error, try `rustc --explain E0152`.

[fanninpm]

Does this still reproduce on the latest nightly? Here is a playground link, for reference.

[JohnTitor]

Triage: Fixed by #85339. That PR should have a regression test for this case, closing.